5%甲拌磷对油菜苗期害虫的防治效果     

赵利敏  杜晓丽  王爱玲 《西北农业学报》1992,1(3):85-88

5%甲拌磷颗粒剂随种条播法防治油菜苗期主要害虫,小区试验,按照活性成分0.75～1.5kg/ha剂量于油菜春播期一次性施入播种沟内,对全体越冬成虫的平均防效,跳(虫甲)类为68.1%,黄曲条跳(虫甲)[Phyllotreta vittata(Fabr.)]为66.7%、油菜茎龟象为63.7%。大田应用以活性成分0.75kg/ha为宜。  相似文献   

田间防治美洲斑潜蝇的药效试验     

沈福英  李腾武  张爱香  陈素馨 《河北北方学院学报(自然科学版)》2001,(4)

施用不同药剂防治美洲斑潜蝇,通过防效比较,确定0.9％阿维菌素乳油2000倍液是防治美洲斑潜蝇的首选药剂。  相似文献   

杀虫剂对烟地节肢动物群落的影响     

高念昭  李恒源  彭长雄  熊兴仁 《西南大学学报(自然科学版)》2003,25(5):421-424

研究了烟地条件下施用劲丹、乐果对烟地节肢动物群落的影响,施药后害虫和天敌的种群消长动态,并以多样性、相似性指数等生态学参数来衡量2种杀虫荆产生的生态效应及对烟地节肢动物群落在空间的分布影响。结果表明,施用乐果地块的节肢动物各类群数量明显下降,天敌恢复缓慢,而害虫恢复较快。群体数量的急剧变化使得群落稳定性降低;花用劲丹的地块,烟青虫、蚜虫、蝽类等害虫数量明显下降,且不易恢复,对天敌影响不大。初步认为,使用劲丹杀虫剂对烟地生物群落物种数量的恢复与保持群落的自我调节能力与自然控制力有重要作用。  相似文献   

新杀虫剂HNPC-A9908对蛋白核小球藻生理生化特性的影响   总被引：4，自引：0，他引：4  

欧晓明  雷满香  王晓光  樊德方 《农业环境科学学报》2004,23(1):154-158

以蛋白核小球藻为材料，采用室内植物生长箱培养方法，研究了HNPC—A9908[O-(3一苯氧苄基)-2-甲硫基-1-(4-氯苯基)丙基酮肟醚]对小球藻细胞的致毒机理。结果表明，低浓度时HNPC—A9908对蛋白核小球藻蛋白质含量具有刺激增加的作用；随着浓度的加大，藻细胞蛋白质含量逐渐降低。同时藻细胞超氧化物歧化酶(SOD)和过氧化物酶(POD)活性也表现出类似的趋势，说明SOD和POD活性的降低打破了小球藻细胞内活性氧产生与清除之间的正常平衡状态，是HNPC—A9908造成藻细胞活性氧过量产生和积累，进而引起藻细胞膜脂过氧化伤害的主要原因之一  相似文献   

不同杀虫剂防治枣大球蚧效果试验     

买买提江·买买提明  孙勇  阿布都加帕尔·托  买买提艾力  帕提古丽·玉  吐妮夏古丽  吐热妮沙  艾斯卡尔·卡  艾尼瓦尔·依 《新疆农业科学》2005,42(Z1):90-92

通过不同杀虫剂对果树介壳虫的防效试验结果表明,40%速扑杀乳油,40%介克特乳油,48%乐斯本乳油对果树介壳虫越冬若虫防效好,在施药后25d防效分别达91.88%、89.77%和77.15%。参试药剂中48%乐斯本乳油、52.25%农地乐乳油,20%杀灭菊酯乳油,80%敌敌畏乳油对果树介壳虫初孵若虫施药后15d防效分别为99.44%、98.86%、100%和95.88%,一次使用可有效地控制果树介壳虫初孵若虫的危害。  相似文献   

0.2%苦皮藤素乳油在土壤中的吸附与降解   总被引：8，自引：0，他引：8  

祁志军  姬志勤  秦宝福 《西北农林科技大学学报(自然科学版)》2004,32(3):73-76

测定了0.2%苦皮藤素乳油在土壤中的吸附、淋溶与降解行为。结果表明,苦皮藤素在土壤中能被较好的吸附;在小麦地、蔬菜地和水稻田土壤中的生物半衰期依次为199.75,167.43和165.43h。  相似文献   

福建省黄曲条跳甲药剂敏感性的地区差异   总被引：5，自引：0，他引：5  

傅建炜  李建宇  邱良妙  林泽燕  尤民生 《福建农林大学学报(自然科学版)》2006,35(3):235-238

利用浸叶法对福建省不同地区黄曲条跳甲的药剂敏感性水平进行测定,结果表明不同地区的黄曲条跳甲对毒死蜱、丁硫克百威、敌敌畏的药剂敏感性普遍处于敏感性下降到低抗水平,少数菜区达到中等抗性水平;不同地区的黄曲条跳甲对氯氰菊酯的药剂敏感性差异较大,部分地区达到中抗或高抗水平.总体上,闽东南沿海地区的黄曲条跳甲药剂敏感性水平普遍低于闽西北地区.  相似文献   

大栗鳃金龟成虫药剂防治试验   总被引：1，自引：0，他引：1  

马艳芳  谢宗谋  张永强  田炜  杨学毅  郭彦林 《中国森林病虫》2011,30(6)

应用6种杀虫剂对大栗鳃金龟Melolontha hippocastani mongolica Ménétriés成虫进行室内药效试验,筛选出8%氯氰菊酯微胶囊剂、10%联苯菊酯乳油、3%高渗苯氧威乳油和45%马拉硫磷乳油4种有效杀虫剂,田间防治试验结果表明,施药48 h后8%氯氰菊酯微胶囊剂400倍液、800倍液,45%马拉硫磷3 000倍液,10%联苯菊酯乳油3 000倍液防治效果均达92%以上。  相似文献   

Spotted wing drosophila infestation of California strawberries and raspberries: economic analysis of potential revenue losses and control costs     

Goodhue RE  Bolda M  Farnsworth D  Williams JC  Zalom FG 《Pest management science》2011,67(11):1396-1402

BACKGROUND: Economic costs of spotted wing drosophila (SWD) include yield and associated revenue losses, labor and material costs for monitoring and management and revenue losses due to the closure of export markets should fruit from SWD‐infested regions be banned by trading partners. This analysis focuses on two types of loss in the California raspberry and strawberry industries: yield losses in the absence of management, and insecticide material costs on a per treatment basis. It computes the cost of a specific management program for raspberries in California's Central Coast region. RESULTS: Insecticide material and application costs per treatment and the cost of the management program are small relative to the yield losses in the absence of management that are observed by growers, researchers and others in initial infestations. CONCLUSION: It is difficult to evaluate precisely the share of pest management program costs due to SWD because insecticides are sometimes used to manage multiple pests, and because labor‐intensive field sanitation efforts to control SWD are recommended practices already. Given these considerations, this analysis finds that the benefits to SWD management well outweigh the costs examined here. Evaluating the efficacy of managing SWD is essential in assessing the risks that SWD poses and the benefits of pest management programs. Copyright © 2011 Society of Chemical Industry  相似文献   

Gene amplification and insecticide resistance   总被引：1，自引：0，他引：1  

Bass C  Field LM 《Pest management science》2011,67(8):886-890

Pesticide resistance in arthropods has been shown to evolve by two main mechanisms, the enhanced production of metabolic enzymes, which bind to and/or detoxify the pesticide, and mutation of the target protein, which makes it less sensitive to the pesticide. One route that leads to enhanced metabolism is the duplication or amplification of the structural gene(s) encoding the detoxifying enzyme, and this has now been described for the three main families (esterases, glutathione S-transferases and cytochrome P450 monooxygenases) implicated in resistance. More recently, a direct or indirect role for gene duplication or amplification has been described for target-site resistance in several arthropod species. This mini-review summarises the involvement of gene duplication/amplification in the insecticide/acaricide resistance of insect and mite pests and highlights recent developments in this area in relation to P450-mediated and target-site resistance.  相似文献